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https://www.readbyqxmd.com/read/29154708/urethral-diverticulum-and-urolithiasis-in-a-female-guinea-pig-cavia-porcellus
#1
Lily A B Parkinson, Jennifer C Hausmann, Robert J Hardie, Megan A Mickelson, Kurt K Sladky
CASE DESCRIPTION A 5-year-old sexually intact female guinea pig was evaluated because of mild dysuria and a subcutaneous mass located cranioventral to the urogenital openings. CLINICAL FINDINGS Non-contrast-enhanced CT and surgical exploration of the distal aspect of the urethra revealed a urethral diverticulum with an intraluminal urolith. Analysis revealed that the urolith was composed of calcium carbonate and struvite. TREATMENT AND OUTCOME The urolith was surgically removed and ablation of the urethral diverticulum was attempted...
December 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29067201/an-imaging-investigation-of-in%C3%A2-situ-uroliths-in-hospitalized-cats-in-new-zealand-and-in-the-united-states
#2
Paul F Wightman, Kate E Hill, Eli B Cohen, Janis Bridges, Charlotte F Bolwell, John French, Brian A Adler, Ron Green
The submission rates of feline uroliths to laboratories and the composition of uroliths have been reported in studies. The prevalence of uroliths reported on imaging findings has not been published. The objective of this retrospective study was to use imaging data to investigate the anatomical location and the prevalence of macroscopic in situ uroliths in cats. Radiographs, sonograms and imaging reports from two cohorts of cats (from New Zealand (n = 497) and the United States (n = 693)) from 2004-2013 were reviewed for the presence of in situ uroliths...
November 2016: Veterinary Medicine and Science
https://www.readbyqxmd.com/read/29031030/ectopic-bone-as-a-nidus-for-calcium-oxalate-urocystolithiasis-in-a-cat
#3
J P Lulich, H S Prasad, M Manno, B Bagley
A 7-year-old female spayed domestic shorthair cat was referred to the urology service for nonsurgical urocystolith removal. A urolith was attached to the urothelium by ectopic bone. Interventional removal without surgery was successful. Follow-up evaluation 3 years after urolith removal revealed recurrent uroliths, bladder wall mineralization, and marked renal mineralization. This case illustrates the metaplastic potential of the urothelium and that ectopic bone should be included among the pathological factors that promote lithogenesis...
October 14, 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28945133/dual-energy-computed-tomography-of-canine-uroliths
#4
Stephanie G Nykamp
OBJECTIVE To determine whether dual-energy CT (DECT) could accurately differentiate the composition of common canine uroliths in a phantom model. SAMPLE 30 canine uroliths with pure compositions. PROCEDURES Each urolith was composed of ≥ 70% struvite (n = 10), urate (8), cystine (5), calcium oxalate (4), or brushite (3) as determined by standard laboratory methods performed at the Canadian Veterinary Urolith Centre. Uroliths were suspended in an agar phantom, and DECT was performed at low (80 kV) and high (140 kV) energies...
October 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28933510/-unusual-case-of-struvite-urolithiasis-in-a-dog-a-case-report-ein-fallbericht
#5
Julia K Mack, Ellen Kienzle
A dog was referred for nutrition consultation after surgical removal of struvite uroliths from the bladder. Inspection of the dog's current ration revealed a pronounced vitamin-A deficiency together with a marked deficiency of protein, phosphorus and magnesium. Therefore, a supersaturation of the urine with ammonium, magnesium and phosphate, the three constituents of struvite, as a cause of struvite calculi formation appears rather unlikely. Vitamin-A deficiency can promote urinary infections and consequently struvite stone formation because of the lack of the protective effect of vitamin A on the epithelia of the urinary tract...
September 20, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28920816/urolithiasis-in-free-ranging-and-captive-otters-lutra-lutra-and-aonyx-cinerea-in-europe
#6
Monika Bochmann, Stephan Steinlechner, Albrecht Hesse, Hans Henrik Dietz, Heike Weber
Between 1996 and 1998, 477 dead otters from different Central European countries were examined for urolithiasis, including 449 free-ranging Eurasian otters (Lutra lutra) as well as 17 Eurasian otters and 11 Asian small-clawed otters (Aonyx cinerea) from captivity. In the free-ranging specimens, uroliths (sand or stones) were found in 105 animals (23.4%), with no significant difference (P = 0.77) between the sexes. Uroliths were not present in any juveniles (n = 26) and urolithiasis was not considered the main cause of death in any individual...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28920798/urolithiasis-in-a-group-of-visayan-warty-pigs-sus-cebifrons-negrinus
#7
James Chatterton, Steve Unwin, Javier Lopez, Julian Chantrey
Four cases of obstructive urolithiasis occurred in male Visayan warty pigs (Sus cebifrons negrinus) during a 12-mo period. One animal died, two were euthanized, and one was treated successfully with a tube cystotomy procedure and a subsequent urinary acidification diet. Uroliths from two cases of urethral obstruction were analyzed and confirmed as calcium carbonate. A fifth nonobstructive case was suspected in an adult female in which calcium carbonate crystalluria was diagnosed, and that case was resolved with medical management...
September 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28710955/epidemiologic-evaluation-of-canine-urolithiasis-in-thailand-from-2009-to-2015
#8
Vachira Hunprasit, Carl A Osborne, Pamela J Schreiner, Jeff B Bender, Jody P Lulich
The cross-sectional study described the epidemiology of 8560 canine urolith submissions from Thailand to the Minnesota Urolith Center between January 2009 and December 2015. The frequency of urolith types, the relationships between urolith type and breed, sex, and neutered status, and change of annual submission proportion over the study period were analyzed. Struvite was the most common canine urolith (44%), and was commonly found in intact females with a mean age of 6.3±3.1years. Calcium oxalate was the second most common (27%), more frequently found in intact males with a mean age of 8...
July 9, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28678386/association-between-cystine-urolithiasis-and-neuter-status-of-dogs-within-the-uk
#9
J Florey, V Ewen, H Syme
OBJECTIVES: The objectives of the study were to examine the association between diagnosis of cystine urolithiasis and entire versus neutered status in male dogs and whether the strength of association varies among breeds. MATERIALS AND METHODS: A previously reported canine urolithiasis database was used, documenting all urolith submissions to Hill's Pet Nutrition UK over a 10-year period. Uroliths were classified as cystine or non-cystine, and only male dogs with known neuter status were included in the analysis...
July 5, 2017: Journal of Small Animal Practice
https://www.readbyqxmd.com/read/28631911/-the-study-of-mineral-composition-and-structure-of-uroliths-in-the-residents-of-tomsk-district-tomsk
#10
O A Sevostyanova, V S Boshchenko, V K Osadchii, V P Parnachev, A K Polienko
AIM: To successfully treat and prevent urolithiasis, the composition and structure of uroliths should be examined using modern analytical techniques. For a long time, studies of the biomineral formation in the human body have been conducted exclusively in the field of medicine. The main attention has been paid to the diagnosis and treatment of diseases leading to the occurrence of pathogenic formations. At the same time, it is quite obvious that it is important to have a clear idea about the causes of pathogenic formations, the mechanisms for their further formation, composition and structure...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28585658/-cystinuria-caused-by-a-slc7a9-missense-mutation-in-siamese-crossbred-littermates-in-germany
#11
Stephanie Hilton, Keijiro Mizukami, Urs Giger
Cystinuria is caused by defective proximal renal tubular reabsorption of the amino acids cystine, ornithine, lysine, and arginine (COLA). The low solubility of cystine in mildly acidic urine may lead to the formation of urinary cystine crystals and uroliths. Much progress has been made recently in the diagnosis and understanding of cystinuria in companion animals. In cats, cystinuria affects equally both genders independent of neutering status and, despite being rare, already more cystinuria-causing mutations have been detected in cats compared to dogs...
August 11, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28556535/mineral-composition-of-uroliths-obtained-from-sheep-and-goats-with-obstructive-urolithiasis
#12
M L Jones, P M Gibbons, A J Roussel, B J Dominguez
BACKGROUND: Knowledge of the mineral composition of the causative urolith is important to develop preventative strategies. Advances in analytic techniques have led to detection of urolith components not previously recognized. HYPOTHESIS/OBJECTIVES: The objectives of this study were to characterize uroliths in sheep and goats structurally and clinically. We hypothesized that amorphous magnesium calcium phosphate (AMCP) would be a naturally occurring urolith type in sheep and goats...
July 2017: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/28493444/impact-of-hyperlipidaemia-on-intermediary-metabolism-faecal-microbial-metabolites-and-urinary-characteristics-of-lipoprotein-lipase-deficient-vs-normal-cats
#13
N Paßlack, J Zentek, J A Larsen, J L Westropp, A J Fascetti
Findings in humans and rats indicate that hyperlipidaemia may be associated with enhanced endogenous oxalate (Ox) synthesis, which may be relevant for calcium oxalate (CaOx) urolith formation. Moreover, changes in lipid metabolism are proposed to negatively affect gut microbiota. This study aimed to investigate those potential interactions in hyperlipidaemic cats. Therefore, 10 normal control cats and seven lipoprotein lipase (LPL)-deficient cats were fed a low-fat diet for seven weeks. During the last week of the study, cats were housed in metabolic cages to collect urine and faeces...
May 11, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28463428/single-layer-cystotomy-closure-of-excised-porcine-bladders-with-barbed-versus-smooth-suture-material
#14
Joshua S Montel, Daniel J Duffy, Hsin-Yi Weng, Lynetta J Freeman
OBJECTIVE: To determine which of 2 suture materials would be superior in terms of closure time and leakage pressure in open single-layer cystotomy closure. STUDY DESIGN: Experimental study. ANIMALS: Twenty-four freshly harvested porcine urinary bladders. METHODS: A cystotomy was performed and the incision closed with a single layer simple continuous suture pattern with barbed (n = 12) or smooth (n = 12) suture...
May 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28444749/transurethral-removal-of-a-cystic-urolith-in-a-mare-using-a-laparoscopic-specimen-pouch
#15
A J Williamson, A O McKinnon
CASE REPORT: Cystic urolithiasis is the most common form of urolithiasis reported in horses. In contrast to the gelding or stallion, clinical disease is less common in the mare and manual removal techniques are possible because of their shorter, wider urethral anatomy. However, these manual removal techniques can be traumatic and are limited by the size of the urolith. This report describes the use of a commercial laparoscopic specimen pouch to remove a cystic urolith in a mare. CONCLUSION: This approach may allow the extraction of larger uroliths per urethra in the mare, while affording some protection to the mucosa of the bladder neck and urethra...
May 2017: Australian Veterinary Journal
https://www.readbyqxmd.com/read/28384169/serum-concentrations-of-symmetric-dimethylarginine-and-creatinine-in-cats-with-kidney-stones
#16
Jean A Hall, Maha Yerramilli, Edward Obare, Jun Li, Murthy Yerramilli, Dennis E Jewell
Serum concentrations of symmetric dimethylarginine (SDMA) correlate with renal function in cats and SDMA has been shown to be a more reliable and earlier marker for chronic kidney disease (CKD) compared with serum creatinine (Cr). Calcium oxalate uroliths tend to develop in mid-to-older aged cats and kidney stones may cause a reduction in renal function with increased SDMA, but normal serum Cr. The purpose of this retrospective study was to determine if cats with kidney stones had increased serum SDMA concentrations, and whether SDMA increased earlier than serum creatinine concentrations...
2017: PloS One
https://www.readbyqxmd.com/read/28380506/dietary-cation-anion-difference-may-explain-why-ammonium-urate-nephrolithiasis-occurs-more-frequently-in-common-bottlenose-dolphins-under-human-care-than-in-free-ranging-common-bottlenose-dolphins
#17
A J Ardente, R S Wells, C R Smith, M T Walsh, E D Jensen, T L Schmitt, J Colee, B J Vagt, R C Hill
Ammonium urate nephrolithiasis frequently develops in common bottlenose dolphins () managed under human care but is rare in free-ranging common bottlenose dolphins. In other species, the dietary cation-anion difference (DCAD) can affect ammonium urate urolith formation by increasing proton excretion as ammonium ions. Therefore, differences in diet between the 2 dolphin populations could affect urolith formation, but the DCAD of most species consumed by free-ranging and managed dolphins is unknown. To compare the nutrient composition of diets consumed by free-ranging and managed bottlenose dolphins, samples ( = 5) of the 8 species of fish commonly consumed by free-ranging bottlenose dolphins in Sarasota Bay, FL, and the 7 species of fish and squid commonly fed to managed bottlenose dolphins were analyzed for nutrient content...
March 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28361470/pathogenesis-of-calcium-oxalate-urinary-stone-disease-species-comparison-of-humans-dogs-and-cats
#18
REVIEW
Allison L O'Kell, David C Grant, Saeed R Khan
Idiopathic calcium oxalate nephrolithiasis is a highly recurrent disease that is increasing in prevalence. Decades of research have not identified effective methods to consistently prevent the formation of nephroliths or induce medical dissolution. Idiopathic calcium oxalate nephroliths form in association with renal papillary subepithelial calcium phosphate deposits called Randall's plaques (RPs). Rodent models are commonly used to experimentally induce calcium oxalate crystal and stone formation, but a rodent model that conclusively forms RPs has not been identified...
August 2017: Urolithiasis
https://www.readbyqxmd.com/read/28306489/evaluation-for-association-between-urolithiasis-and-chronic-kidney-disease-in-cats
#19
Andréanne Cléroux, Kate Alexander, Guy Beauchamp, Marilyn Dunn
OBJECTIVE To determine whether urolithiasis is associated with chronic kidney disease (CKD) in cats. DESIGN Retrospective case-control study. ANIMALS 126 cats (59 and 67 with and without urolithiasis, respectively). PROCEDURES Medical records from June 2006 to July 2013 were searched to identify cats that underwent abdominal or focal urinary tract ultrasonography and for which serum creatinine concentration and urine specific gravity data were obtained ≤ 14 days before or after the examination. In cats with (urolithiasis group) and without (control group) urolithiasis, the presence of CKD was determined according to International Renal Interest Society guidelines...
April 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28247720/-the-influence-of-alternating-magnetic-field-on-in-vitro-litholysis-of-uroliths-in-blemaren-water-solutions
#20
V M Popkov, D A Usanov, V G Rebrov, A D Usanov, D G Verkhov, V M Bulanov
THE AIM OF THE RESEARCH: increase of efficiency of urolith in vitro solution using water Blemaren medication solutions after their exposure to 2 Hz alternating magnetic field. MATERIALS AND METHODS: water solution of Blemaren medication with pH=6,15 in concentrations corresponding to single portion of medication (1 tablet m=3,5282 g per 250 ml of water) and uroliths (oxalates, urates including uncommon xanthine calculi). Composition of calculi was determined by means of X-ray tests and IR spectroscopy...
August 2016: Urologii︠a︡
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